Hi All,
Upon reviewing subortical
segmentations I see that often a mismatch exists between
what appears on the wm.mgz and the color-coded segmented maps.
Precisely - as an example - in
the attached figure you can see that in the case of left insula WM, part of the
tissue was classified as GM (in brown) in the color-coded segmented map and as
WM in the wm.mgz. Contrariwise, the right temporal-parietal GM cortex part of
the tissue is classified as WM (in green) the color-coded segmented map and
as non-WM in the wm.mgz. The latter occurs in many regions of the brain
without a clear anatomical pattern.
I was wondering if this is just a display
issue or it rather reflects some mismatch in actual tissue classification
with consequential errors in the generated values of thickness and volumes as
well?
If so, is there any way I can correct for
this?
Thank you in advance,
Antonio
Antonio Gallo, MD
NIB-NINDS-NIH
Building 10, Room 5B16
ph #: 001-301-402.6391
fax #: 001-301-402.0373
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